Viewing Station: PA-CH-27 : Chadds Ford 3.1 SW
Aug 11, 2013 - Sep 20, 20264,726 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.08"
September 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
3.19"
Departure from Normal
0.89" : 128% of Normal
Year-To-Date: 35.88"
Jan 1 to Sep 20, 2026(263 of 263 days covered by obs)
NOAA Normal
34.61"
Departure from Normal
1.27" : 104% of Normal
Water Year-To-Date: 43.70"
Oct 1, 2025 to Sep 20, 2026(355 of 355 days covered by obs)
NOAA Normal
46.25"
Departure from Normal
-2.55" : 94% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.46
3.53
-0.07
Feb
2.82
2.88
-0.06
Mar
4.29
4.39
-0.10
Apr
3.73
3.69
0.04
May
3.72
3.86
-0.14
Jun
4.40
4.47
-0.07
Jul
4.58
4.69
-0.11
Aug
4.42
4.55
-0.13
Sep
4.78
4.93
-0.15
Oct
4.13
4.25
-0.12
Nov
3.41
3.27
0.14
Dec
4.10
4.33
-0.23
47.84
48.84
-1.00